Sub-partitioning in intra coding
AssigneesBeijing Bytedance Network Technology Co., Ltd., Bytedance Inc.
InventorsKai ZHANG, Li ZHANG, Hongbin LIU, Zhipin DENG, Na ZHANG, Yue WANG
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Abstract
Methods, devices, and systems related to video processing are disclosed. In one example aspect, a method of video processing includes performing a conversion between a block of a current picture of a video and a coded representation of the video using an intra-subblock partitioning (ISP) mode. A prediction is determined for each sub-partition using an intra-prediction process based on samples in the current picture using the ISP mode. The block is partitioned into multiple sub-partitions including a first sub-partitions having a same top-left corner position as a top-left corner position of the block.
Claims20
A method for processing video data, comprising:
- determining, for a conversion between a current video block of a video and a bitstream of the video, whether a partitioning mode is used for the current video block,
- partitioning, in case that the partitioning mode is used for the current video block, the current video block into multiple sub-regions;
- and
- performing the conversion based on the multiple sub-regions,
- wherein the multiple sub-regions share a same intra prediction mode, and the multiple sub-regions includes a first sub-region having a same top-left corner position as that of the current video block.
An apparatus for processing video data comprising a processor and a non-transitory memory with instructions thereon, wherein the instructions upon execution by the processor, cause the processor to:
- determine, for a conversion between a current video block of a video and a bitstream of the video, whether a partitioning mode is used for the current video block,
- partition, in case that the partitioning mode is used for the current video block, the current video block into multiple sub-regions;
- and
- perform the conversion based on the multiple sub-regions,
- wherein the multiple sub-regions share a same intra prediction mode, and the multiple sub-regions includes a first sub-region having a same top-left corner position as that of the current video block.
A non-transitory computer-readable storage medium storing instructions that cause a processor to:
- determine, for a conversion between a current video block of a video and a bitstream of the video, whether a partitioning mode is used for the current video block,
- partition, in case that the partitioning mode is used for the current video block, the current video block into multiple sub-regions;
- and
- perform the conversion based on the multiple sub-regions,
- wherein the multiple sub-regions share a same intra prediction mode, and the multiple sub-regions includes a first sub-region having a same top-left corner position as that of the current video block.
A non-transitory computer-readable recording medium storing a bitstream which is generated by a method performed by a video processing apparatus, wherein the method comprises:
- determining whether a partitioning mode is used for a current video block of a video,
- partitioning, in case that the partitioning mode is used for the current video block, the current video block into multiple sub-regions;
- and
- generating the bitstream based on the multiple sub-regions,
- wherein the multiple sub-regions share a same intra prediction mode, and the multiple sub-regions includes a first sub-region having a same top-left corner position as that of the current video block.
Dependencies are inferred from the claim text.